.box {
  position: relative;
  border: 1px solid red;
  background-image: linear-gradient(#f0f0f0 1px, transparent 1px),
    linear-gradient(90deg, #f0f0f0 1px, transparent 1px);
  background-size: 20px 20px;
}

.customPopup {
  display: none;
  position: absolute;
  z-index: 999;
  padding: 10px;
  background-color: white;
  border: 1px solid #ddd;
  box-shadow: 0 0 10px #ddd;
  cursor: pointer;

  .customPopupText {
    text-align: center;
    font-size: 18px;
  }

  .customPopupText:hover {
    color: #dc143c;
  }
}
